Terumo Kabushiki Kaisha

Nok Corporation

Fujitsu Corporation

Dai Nippon Printing Co., Ltd.

Tokyo Cosmos Electric Co., Ltd.

Nok Kluber Co., Ltd.

Takeshi Sato

Renjo Takama

Masashi Kudo

Masaya Otsuka

Mikiko Hojo

Satoru Abe

Kisei Matsumoto

Naonobu Yoshi

Shinya Yoneda

Yoshihiro Kawanabe

Takayuki Hioki

An oxygenator having a plurality of porous hollow fiber membranes for gas exchange to treat blood is manufactured by dissolving a silicone compound in an organic solvent having a surface tension of less than 70 dyn/cm to prepare a coating solution, and bringing an inner surface of the hollow fiber membranes into contact with the coating solution under a negative pressure of 50 hPa or more and 150 hPa or less to form a silicone compound-containing coating layer on the inner surface. An antithrombotic polymer compound-containing coat can be provided directly on an outer surface of the hollow fiber membranes.

Oxygenator and method for manufacturing same

A covering state of a coating layer containing a silicone compound on an inner surface of hollow fiber membranes is evaluated by dissolving the silicone compound and a dyeing agent in an organic solvent and causing the coating solution to pass through the hollow fiber membranes. The covering state of the silicone compound or a crosslinked product is determined by observing a dyed state of a hollow fiber membrane end surface on a coating solution passing start side and a dyed state of a hollow fiber membrane end surface on a coating solution passing end side of the hollow fiber membrane on which the coating layer is formed.

Method for evaluating covering state of silicone compound

An oxygenator has a plurality of porous hollow fiber membranes comprising polypropylene for gas exchange, wherein each hollow fiber membrane has an inner surface that forms a lumen and an outer surface. The oxygenator is manufactured using a method which involves preparing a coating solution containing at least one compound selected from the group consisting of dopamine, salt of dopamine, and oligomer of dopamine; and bringing the inner surface or the outer surface of the hollow fiber membranes into contact with the coating solution for less than ten hours while blowing oxygen gas in the coating solution to form a dopamine polymer layer containing a polymer of the compound on the inner surface or the outer surface.

Method for manufacturing oxygenator

An attachment device that suppresses a decrease in the detection accuracy of a sensor. This attachment device is designed to attach a sensor to one surface side of a transmission plate such that the sensor can detect a transmitted wave transmitted from the other surface side.

Attachment device

Provided is a metal microparticle dispersion including metal microparticles, a polymeric dispersant and a dispersion medium, wherein an average primary particle diameter of the metal microparticles is 0.001 to 0.5 &#x3bc;m; the polymeric dispersant has a polyester skeleton in at least one of a principal chain and a side chain thereof; or the polymeric dispersant has a polyether skeleton in at least one of a principal chain and a side chain thereof; and a content of the above polymeric dispersant is 0.1 to 100 parts by mass based on a content of 100 parts by mass of the metal microparticles. Further, provided is a production process for an electrically conductive substrate, and an electrically conductive substrate produced by the above production process is provided.

Metal microparticle dispersion, process for production of electrically conductive substrate, and electrically conductive substrate

Cross-linked rubber obtained from a rubber composition, which comprises 100 parts by weight of EPDM, 5-120 parts by weight carbon black, 70-150 parts by weight of fine bituminous powder, and 0.2-8 parts by weight of an organic peroxide, has distinguished heat resistance and sealability, and can suppress blister generation due to pressure changes when used in contact with carbon dioxide, and is specifically distinguished foaming-resistance characteristics due to abrupt pressure reduction of carbon dioxide, which are the necessary characteristics of seal material for carbon dioxide refrigerant, and also distinguished compression set characteristics, which determine the product life at elevated temperatures, and thus is suitable for use as carbon dioxide seal materials, such as O rings, packings, gaskets, oil seals, valves, etc.

Rubber composition

A silicone rubber composition, which comprises 100 parts by weight of vinyl group-introduced methylphenylvinyl-based silicone rubber obtained by copolymerization of dimethylsiloxane copolymerization units as the main component with 3-30 mol. % of methylphenylsiloxane copolymerization units, and 0.2-8 parts by weight of an organic peroxide, where introduction of vinyl groups into the silicone rubber can be attained generally by copolymerization of 0.1-5 mol. % of methylvinylsiloxane. When silica is used as a filler, it is desirable to use a surfactant for silica, and water together. Owing to distinguished low-temperature characteristics and blister resistance, the present silicone rubber composition can be used a suitable seal material for a high-pressure hydrogen gas storage tank, for example, to storage under 70 MPa, and particularly as suitable vulcanization-molding materials for O rings, packings, gaskets, oil seals, valves, etc.

Silicone rubber composition

A silicone rubber composition, which comprises 100 parts by weight of a vinyl group-introduced methylfluoroalkylvinyl-based silicone rubber obtained by copolymerization of a dimethylsiloxane copolymerization unit as the main component with 5-50% by mole of a methylfluoroalkylsiloxane copolymerization unit, and 0.2-8 parts by weight of an organic peroxide. When silica is used as a filler, it is desirable to use a surfactant for silica, and water at the same time. The present silicone rubber composition can give distinguished low-temperature characteristics and blister resistance, and thus can be used for seal materials directed to high-pressure hydrogen gas storage tanks, for example, to storage under 70 MPa, and particularly as suitable vulcanization-molding materials for O-rings, packings, gaskets, oil seals, valves, etc. High-pressure gases for storage are not limited only to hydrogen gas, but also to oxygen gas, nitrogen gas, helium gas, etc. likewise.

An NBR composition, which comprises NBR, and white carbon having a specific surface area (BET method) of 30-110 m/g, preferably 30-60 m/g, can be vulcanized by a vulcanization system consisting of an organic peroxide and sulfur or a sulfur-generating compound, and can give vulcanization moldings having equivalent compression set characteristics to those of expensive hydrogenated NBR vulcanization moldings, and thus can be effectively used as a vulcanization molding material for seal materials calling for such characteristics, for example, O rings, gaskets, packings, oil seals, etc.

NBR composition

A communication apparatus and a congestion regulation control method which execute regulation control at the time of congestion, thereby improving communication quality. A congestion monitor monitors a congestion state, sets a congestion level and determines whether or not to perform regulation based on the congestion level. Traffic measuring unit measures the number of received signals as a traffic intensity. A traffic comparitor compares the traffic intensity with a preset traffic-regulation start traffic intensity when it is determined that regulation is to be performed. A regulation control means performs traffic regulation control when a comparison result shows that the traffic intensity is equal to or greater than the traffic-regulation start traffic intensity, and performs regulation control on a maintenance and operation process when the traffic intensity is smaller than the traffic-regulation start traffic intensity.

Growing community of inventors

Kanagawa, Japan

Takeshi Sato